Free and forced nonlinear oscillations of a two-layer composite beam with interface slip
Artykuł w czasopiśmie
| Status: | |
| Autorzy: | Lenci Stefano, Warmiński Jerzy |
| Rok wydania: | 2012 |
| Wersja dokumentu: | Elektroniczna |
| Język: | angielski |
| Numer czasopisma: | 3 |
| Wolumen/Tom: | 69 |
| Web of Science® Times Cited: | 10 |
| Scopus® Cytowania: | 12 |
| Bazy: | Web of Science | Scopus |
| Efekt badań statutowych | NIE |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | NIE |
| Abstrakty: | angielski |
| Free and forced flexural nonlinear vibrations of a two-layer beam are investigated. Each beam is assumed to have Euler–Bernoulli kinematics and free-free boundary conditions. The interface allows only nonlinear elastic slip between adjacent sides of the beams, so that the transversal displacement is unique. Free vibrations are considered first by the multiple time scale method, which allows to determine the amplitude dependent nonlinear natural frequencies of the system. It is shown that the nonlinear coefficient of the backbone curve is positive, so that hardening/ softening behavior of the interface generates hardening/ softening behavior of the whole structure. The modifications of the linear normal modes for moderate excitation amplitudes have been computed. Forced and damped nonlinear oscillations are then considered by the same mathematical method, and the nonlinear frequency response curves are obtained. |
